Trolley-pole head.



No. 879,729. PATENTED PEB.18, 190s.

-G. G. BUCHANAN.

TROLLEY POLE HEAD.

APPLICATION FILED APR. 21, 1906.

2 $HEETS-SHEET 1,

G. (2. [fun/Jana attorney! No. 879,729. PATENTED FEB. 18, 1908. G. G.BUCHANAN.

TROLLEY POLE HEAD.

APPLICATION FILED APR.21, 1906.

2 SHEETS-SHEET 2.

:1 Horn my BUCHANA clear, and exact descrip tioniof the invention, sucn'enable,

[to whichrli same-. f"

' Another object to improve theconstruction of the trolley wheel. thefollowing description and 1 claims.

1 transverse'section i proint Where the tubular memb'erjoins the allywidens from the semi-cylindrical pocket.

perforated enlargement semi-cylindrical pocket bolt 11 which permits Vname to this specificatio'nin the'presence of vtwo subscribingwitnesses.

and t'ate of Pennslvam'a, .new. and useful Tro 'ey-Pole side to sidewhen the car is going 'fast or turnslot,6 the center bolt 0' ening 5.provi ed a ate GEQRGE GIRDEN BUCHANAN OF DUBOIS, PENNSYLVANIA.

TROLLEY-POLE- HEAD.

Specification of Letters Patent.

Patented Feb. 18, 1908.

' Application filed April 21. 1906- Serial No. 313-051 To all'wfiomiitmay concer'ru Be, it known that I, GEORGE GIRDEN a citizen ofthe United States, residin at Dubois, in the county of 'Clearficld haveinvented a Head; and I do hereby." declare the following to be a' full,

' I others-skilled 'in the art Lappertains to'make and use the Thisinyention relats to over. head trolley pole heads and wheels, and hasfor. an .0bject 'toprovide' aD-iITIPIOVGd pole head which is formedto'pe'rmit the wheel to swing from ing'curv'es. w

Other and "further objects will appear will be more particularly pointedout the appended In the drawingsFig'ure l 'is a: topplan view of theinvention Fig. 2: is a longitudinal section Fig. 3 is a sideelevation,'and Fig. 4 is a I I through the wheel and pin. Referrin more"particularly to'the drawings, 1 in icates the trolley;

A ole. Fitting the'upper end of the. trolley po e is 'a tubular member 2from which extends rearwardly and-at'an angle theretofa frame 3. At theame 3, the frame'is depressed to form an upwardly openingsemi-cylindrical pocket 4 and 'a bolt opening 5 extends through theframe within the pocket. The frame graduandat its endis "rovided with anarcuate 0 which is the center of the On each side of the frame is rallyopening pocket 7 which is formed-in a housing-8 extending slightly abovethe frame 3. a The head 9 is provided at one end with a 10 which fits inthe n 4 before mentioned and is held'therein bya 'thehead to swing. Thewalls of the pocket shield the forward end of' the head. The head 9rests upon the frame and is provided with a headed bolt 12 which"extends through the "arcuate slot 6 and holds the rear portion of' thehead to the. frame.

18 opening manner herein shown,

Also carried 'on opposite sides of thehead be tween its pivot and thearcuate slot 6, are studs 13 to each of which one end of a helicalspring 14 is secured, the other end of the helical spring being seatedin lateral pockets 7 on the frame. These springs acting on the head inopposite directions, normally inaintain it alined with the trolley pole.At its free end the head is bifurcated, the arms 15 of the bifurcationbeing provided with alined openings to receive the spindle 16 of thewheel 17. This spindle or pin .is formed of. casehardened steel and isprovided with a-grease or lubricant chamber I y a lateral Wheel bore.This chamber further'opens toward one end of the spindle, this openingbeing closed by a screw plug 20. At the end at g which the greasechamber opens, the spindle is provided with an annular flange 21, whileat the'other end it is providedwith a lateral perforation 22 throughwhich a cotter pin-23 is passed to hold the spindle withinthe head.

The wheel '17 is formed 'of a case hardened steel bushing- 24 which iscast brass portion 25. I -I desire it to be understood that theinvenrovidedthe essence of my invention is emp oyedp I Having thus"described my invention, what I claim and desire. to secure, byLetters-Patent, is" v The combination with a'member, formed to be fittedto a trolley pole, of .a triangular v,

shaped frame, comprising two diverging arms having pockets, and aiding-member connecting the outer ends o the arms, said guiding memberhaving curved slots,- said trian lar frame having atits smaller end,.acircu arflange, a head pivotally connected to the forward end of theframe and inside of said flange, said head having a headed studprojecting through the slot of the guiding member, coiled springsseatedin the pockets and connected to'the opposite sides of the.

one of the surrounded with a tion may be constructed otherwise than-theheads, and a trolley wheel carried by the a head; j

In'testimony whereof I. have signed my GEORGE GIRDEN BUCHANAN.

Witnesses: p

i F. R. SQOFIELD,

v D. S; HERON.

